Malicious PDF — malware analysis report

Static analysis result for SHA-256 63bbc66518669d3b…

MALICIOUS

PDF

48.8 KB Created: 2020-09-18 20:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cf9a5ab9e60c4f6bf81040660104d1b SHA-1: a3393619adc852d4b5a35ad59b3329ea2bc37d43 SHA-256: 63bbc66518669d3b8afe3e3d153880d11efe1206c966b9aedb2a12a8cf342221
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, includes text referencing 'prop bets super bowl 2020 national anthem' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous other PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/wix?keyword=prop+bets+super+bowl+2020+national+anthem
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://f6a4b185-0ec8-466f-84d4-70731631495e.filesusr.com/ugd/2d797c_ed440fdf50054c7ab75eaf3f3950b1ac.pdf?index=true
    • https://06e8efd3-2d11-49c6-9bf7-d404fee30c1b.filesusr.com/ugd/7aabb2_208208bbc5a44d308da23f62b0c6a559.pdf?index=true
    • https://cdedb35d-29bc-41eb-b573-60b4918fe2f3.filesusr.com/ugd/bf07b1_4da18a3e3f7c434999ae9d69301bd22f.pdf?index=true
    • https://47b8285e-c9f3-41be-a65a-7f20a333c523.filesusr.com/ugd/8ff694_07fb890954fc4cfcaa491122dd5c8e05.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0438/4276/4962/files/16817016817.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3847/files/13441829524.pdf
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/bonibeselegoxok.pdf
    • https://cdn.shopify.com/s/files/1/0435/4100/4439/files/application_pour_apprendre_anglais_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/7234/6526/files/50916532178.pdf
    • https://cdn.shopify.com/s/files/1/0431/7803/3303/files/76355260946.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/77004861914.pdf
    • https://cdn.shopify.com/s/files/1/0436/2053/2386/files/zosopojomevukekimamag.pdf
    • https://cdn.shopify.com/s/files/1/0438/3070/6333/files/godigure.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071cf.bin
02a96e48d573c9f4f7115820cdf48442b77e41c449fa9ccbe7502fe4fd384f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71CF 5448 bytes
font_01_sfnt_off00008432.bin
194b128c5bc4f0a9d11c33f7ec374c83c064cfe27eda63d43f252aac905058ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8432 10612 bytes
font_02_sfnt_off0000a83e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA83E 4324 bytes

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